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2. Drill bit - Wikipedia

   en.wikipedia.org/wiki/Drill_bit

   Hammer drill bits often use special shank shapes such as the SDS type, which allows the bit to slide within the chuck when hammering, without the whole heavy chuck executing the hammering motion. Masonry bits of the style shown are commonly available in diameters from 3 mm to 40 mm. For larger diameters, core bits are used.

3. Diamond tool - Wikipedia

   en.wikipedia.org/wiki/Diamond_tool

   Shaped diamond tools are used to process stone to a particular shape. Resin-bonded diamond polishing pads are used to polish stone. Construction: Medium or small sized diamond saw blades, diamond core drill bits and some diamond grinding or polishing tools are often used in repairing roads, remodeling buildings, and processing building materials.

4. Exploration diamond drilling - Wikipedia

   en.wikipedia.org/wiki/Exploration_diamond_drilling

   Diamond core drill bits. Rodolphe Leschot is often cited as being the inventor of the first core bit in 1863. [1] Early diamond drilling opened up many new areas for mineral mining, and was related to a boom in mineral exploration in remote locations. Before the invention of the portable diamond drill, most mineral prospecting was limited to ...

5. Drill bit (well) - Wikipedia

   en.wikipedia.org/wiki/Drill_bit_(well)

   The hole diameter produced by drill bits is quite small, from about 3.5 inches (8.9 cm) to 30 inches (76 cm), compared to the depth of the hole, which can range from 1,000 feet (300 m) to more than 30,000 feet (9,100 m).

6. Drill bit sizes - Wikipedia

   en.wikipedia.org/wiki/Drill_bit_sizes

   Drill bits of the less routinely used sizes, such as 2.55 mm, would have to be ordered from a specialist drill bit supplier. This subsetting of standard sizes is in contrast to general practice with number gauge drill bits, where it is rare to find a set on the market which does not contain every gauge. There are also Renard series sequences of ...

7. Drill - Wikipedia

   en.wikipedia.org/wiki/Drill

   A magnetic drill is a portable machine for drilling holes in large and heavy workpieces which are difficult to move or bring to a stationary conventional drilling machine. It has a magnetic base and drills holes with the help of cutting tools like annular cutters (broach cutters) or with twist drill bits. There are various types depending on ...